Posted inExchange Online

MC1245222: Outlook for Windows Adds Support for Sharing Local Word, Excel, and PowerPoint Files

3 minutesPosted inExchange Online
MWPRO IMPACT SCORE
OPERATIONAL IMPACT
32
0 25 50 75 100
MODERATE IMPACT • ASSESS BUSINESS IMPACT
Recommended Action:
Take a look and decide whether this affects your tenant, users or support teams.
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Primary Audience

Microsoft 365 AdminsExchange AdminsIT ManagersService OwnersEnd Users
Why this score?
AI Confidence
HIGH
Enough detail is available to trust this assessment.
Assessment Reasoning
Microsoft has delayed the rollout of support for sharing local Word, Excel and PowerPoint files through the new Outlook for Windows. The only change is the revised timeline extending rollout completion into March 2027. Admin impact and urgency remain moderate as no configuration or policy changes are required, but awareness and communication updates may be useful for organisations transitioning to the new Outlook.
30
🛡️ Admin Impact
MEDIUM
35
👥 User Impact
MEDIUM
35
⚡ Urgency
MEDIUM
25
🔧 Effort
MEDIUM
ℹ️ WHAT YOU NEED TO KNOW
📌

AT A GLANCE

The new Outlook for Windows will let users attach Word, Excel and PowerPoint files stored locally. It closes the gap between classic and new Outlook versions.
👥

END USERS

Users in the new Outlook can attach local Office files directly to emails.
🛡️

IT ADMINS

No immediate admin action required, but worth updating documentation and letting support teams know about the change.
📅

ROLLOUT TIMELINE

Upcoming:
Mid‑January 2027

📢 Official Microsoft Message Center Announcement

(Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows
Message ID: MC1245222 (Updated)

Updated November 4, 2026: We have updated the timeline. Thank you for your patience. 

[Introduction]

We’re adding support for sending locally stored Word, Excel, and PowerPoint files as email attachments directly through the new Outlook for Windows. This update streamlines the sharing experience and aligns with ongoing efforts to bring feature parity between classic Outlook for Windows and the new Outlook.

This message is associated with Microsoft 365 Roadmap ID 557675.

[When this will happen] 

  • General Availability (Worldwide): We will begin rolling out in mid-January 2027 (previously early November 2026) and expect to complete by mid-February 2027 (previously early December 2026).
  • General Availability (GCC): We will begin rolling out in late February 2027 (previously mid-January) and expect to complete by late March 2027 (previously mid-February).

[How this affects your organization]

Who is affected

  • Users working with locally stored Word, Excel, or PowerPoint files (not stored in OneDrive).
  • Organizations adopting or transitioning to the new Outlook for Windows.

What will happen

  • Users can now share local Office files as email attachments directly through the new Outlook for Windows.
  • Users will no longer need to rely on the classic Outlook for Windows to send local file attachments.
  • This feature is ON by default.
  • There is no change to existing admin controls or policies, and all existing Outlook/Exchange policies continue to apply.

[What you can do to prepare]

No admin action is required.

To prepare your organization, you may:

  • Inform help desk staff about this update to reduce support inquiries.
  • Update your internal documentation if it references classic Outlook workflows.
  • Encourage users to adopt the new Outlook for Windows if your organization is transitioning away from classic Outlook.

[Compliance considerations]

No compliance considerations identified. Review as appropriate for your organization.

Source: Microsoft Message Center • Analysed by MWPro

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